CN111443670B - Control method and device for photovoltaic glass coating production line - Google Patents
Control method and device for photovoltaic glass coating production line Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims abstract description 160
- 238000000576 coating method Methods 0.000 title claims abstract description 142
- 239000011248 coating agent Substances 0.000 title claims abstract description 139
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 134
- 239000007888 film coating Substances 0.000 claims abstract description 77
- 238000009501 film coating Methods 0.000 claims abstract description 77
- 238000007599 discharging Methods 0.000 claims abstract description 76
- 238000007747 plating Methods 0.000 claims abstract description 14
- 230000001133 acceleration Effects 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000004364 calculation method Methods 0.000 description 7
- 238000011217 control strategy Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
- C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32252—Scheduling production, machining, job shop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a control method and a device for a photovoltaic glass coating production line, wherein the method comprises the following steps: when the film plating machine is started, the film feeding roller way, the film plating section roller way and the film discharging roller way of the film plating machine are operated at a speed V2; when the tail end of a second glass substrate glass2 passing through the wafer feeding roller way enters the inlet of the roller way of the coating section, if the distance S1 from the tail end of a first glass substrate glass1 on the wafer feeding roller way to the outlet of the wafer feeding roller way is greater than the preset distance Sabs, the wafer feeding roller way operates at the speed V1, otherwise, the speed V2 of the wafer feeding roller way is kept unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of a film coating section belt, and the film feeding roller way and the film coating section belt run at a speed V1; the invention has the advantages that: the working efficiency of the photovoltaic glass coating production line is improved.
Description
Technical Field
The invention relates to the field of glass deep processing equipment, in particular to a control method and a control device for a photovoltaic glass coating production line.
Background
With the increasing market demand of coated glass, the scale of solar photovoltaic glass coating production lines is continuously enlarged. However, the efficiency of the existing coating production line is low at present because the speeds of a sheet feeding roller way and a sheet discharging roller way of the coating machine are always consistent with the speed of a coating section. When the coating operation is carried out in the coating process requirement, the running speed of the roller way of the coating section is limited, and the roller way cannot run at a high speed, otherwise, the quality of the coating film layer is influenced. In the low-speed conveying process, the time for the single glass substrate to enter the coating section roller way is prolonged due to the distance, the coating machine does useless work when the distance between the substrates reaches the coating section, and the coating efficiency is low. In a production line with daily quantity of 5000 glass substrates as an example, if the transfer time of a single glass substrate is saved by 3 seconds, the single-day yield can be improved by 1048 glass substrates, and the yield is increased by 20.96%. It can be seen that there is much room for improvement in current coating production techniques and the efficiency of the production line needs to be increased to meet the ever-expanding market demand.
Chinese patent publication No. CN109182995A discloses a coating control system of a non-uniform film product, which comprises an upper computer, a PLC (programmable logic controller) control host, an information acquisition device, a motor servo controller and a sputtering cathode electrical source controller; the information acquisition device is used for detecting the position of the glass substrate on the conveying roller way and the temperature and air pressure information in the process chamber, and the PLC control host is used for receiving the detection information sent by the signal acquisition device; controlling a motor servo controller and a sputtering cathode electrical source controller to work according to the detection information; the motor servo controller is used for sending a control signal to the motor and controlling the motor to rotate according to different set speed curves. The motor servo controller controls the motor to rotate according to a set motor rotating speed curve, so that the n conveying rollers corresponding to each layer of film can be independently adjusted and controlled, the speed of the glass substrate under the corresponding sputtering cathode can be adjusted, the thickness of the plated film layer can be controllably changed, and the film coating of the non-uniform film layer product which can be continuously produced in a large area can be realized. The thickness of the film layer is controlled mainly by controlling n conveying rollers corresponding to each film layer, the control of the speed of a film feeding roller way, the speed of a film discharging roller way and the speed of a film coating section is not involved, and the high-efficiency transmission of the glass substrate can not be realized.
Disclosure of Invention
The invention aims to solve the technical problem of how to improve the working efficiency of a coating production line.
The invention solves the technical problems through the following technical means: a control method of a photovoltaic glass coating production line comprises the following steps:
the method comprises the following steps: when the film plating machine is started, the film feeding roller way, the film plating section roller way and the film discharging roller way of the film plating machine are operated at a speed V2;
step two: when the tail end of a second glass substrate glass2 passing through the wafer feeding roller way enters the inlet of the roller way of the coating section, if the distance S1 from the tail end of a first glass substrate glass1 on the wafer feeding roller way to the outlet of the wafer feeding roller way is greater than the preset distance Sabs, the wafer feeding roller way operates at the speed V1, otherwise, the speed V2 of the wafer feeding roller way is kept unchanged; when the head end of the glass1 of the first glass substrate on the film feeding roller way reaches the inlet of the roller way of the film coating section, the speed of the film feeding roller way is kept consistent with that of the belt of the film coating section, and the film feeding roller way and the belt of the film coating section run at the speed V1;
step three: in the sheet discharging roller way, when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way, the time T2 required by the belt of the film coating section roller way to move S2 at the speed V1 is calculated, the speed of the sheet discharging roller way is increased to the speed V3 from the speed V2 to send out the third glass substrate glass3 coated with the film, the PLC module times the operation time of the sheet discharging roller way, and if the operation time Tc is more than or equal to T2, the speed of the sheet discharging roller way is kept consistent with that of the film coating section roller way.
According to the invention, the running speeds of the wafer feeding roller way, the coating section roller way and the wafer discharging roller way are controlled in real time during wafer feeding and wafer discharging, and on the premise of not changing the requirements of the coating section process, new components are not required to be added based on coating machine equipment in the original coating production line, and only by adding an intelligent roller way control strategy in a PLC module, the interval transmission time between glass substrates is shortened, and the working efficiency of the photovoltaic glass coating production line is greatly improved.
Preferably, the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
Preferably, the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the coating section roller way belt roller.
Preferably, the second step further comprises:
when the coating machine is started to run, the coating machine passes through the wafer feeding roller wayWhen the tail end of the second glass substrate glass2 enters the inlet of the coating section roller way, the PLC module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, and the fact that the film feeding roller way and the coating section roller way do not convey the same glass substrate at the moment is shown, when the PLC module receives the falling edge signal, the PLC module can enter the first glass substrate glass1 in the film feeding roller way, and the formula S1= L is utilized j –v j *T j Calculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T j The time from the head end of the first glass substrate glass1 entering the wafer feeding roller way, v j The speed of the current sheet-feeding roller table, L j The length of the sheet feeding roller way.
Preferably, the third step further comprises:
when the tail part of the third glass substrate glass3 passing through the coating section enters the inlet of the sheet outlet roller way, the photoelectric sensor X3 between the sheet outlet roller way and the coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the sheet outlet roller way and the coating section roller way at the same time, and the speed of the sheet outlet roller way is accelerated to V 3 In operation, when a falling edge signal of the sensor is received in the PLC module, if a new glass substrate entering the coating section roller way, namely a second glass substrate glass2, the formula T is utilized 2 ＝L d /v d -T d Calculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet 2 Wherein, T d The time from the head end of the second glass substrate glass2 entering the coating section roller way, v d The speed of the roller table at the front coating section, L d The length of the roller way of the coating section;
starting acceleration of the sheet discharging roller way, starting timing by the acceleration timing time Tc set in the PLC module, and when the time Tc is more than or equal to T 2 The speed of the sheet discharging roller way is required to be consistent with that of the film coating section, so that the speed of the sheet discharging roller way is reduced to V2 for operation.
The invention also provides a control device of the photovoltaic glass coating production line, which comprises:
the starting module is used for enabling a film feeding roller way, a film coating section roller way and a film discharging roller way of the film coating machine to operate at a speed V2 when the film coating machine is started;
the film feeding control module is used for enabling the film feeding roller way to operate at a speed V1 if the distance S1 from the tail end of the first glass substrate glass1 on the film feeding roller way to the outlet of the film feeding roller way is greater than a preset distance Sabs when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the roller way of the film coating section, otherwise, keeping the speed V2 of the film feeding roller way unchanged; when the head end of the glass1 of the first glass substrate on the film feeding roller way reaches the inlet of the roller way of the film coating section, the speed of the film feeding roller way is kept consistent with that of the belt of the film coating section, and the film feeding roller way and the belt of the film coating section run at the speed V1;
and the film discharging control module is used for calculating the time T2 required by the movement S2 of the belt of the film coating section roller way at the speed V1 when the tail part of the third glass substrate glass3 passing through the film coating section enters the entrance of the film discharging roller way in the film discharging roller way, the speed of the film discharging roller way is increased to the speed V3 from the speed V2 to send out the third glass substrate glass3 which is coated with the film, the PLC module times the operation time of the film discharging roller way, and if the operation time Tc is more than or equal to T2, the speed of the film discharging roller way is kept consistent with the speed of the film coating section roller way.
Preferably, the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
Preferably, the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the coating section roller way belt roller.
Preferably, the sheet feeding control module is further configured to:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the PLC module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, the fact that the same glass substrate is not conveyed by the film feeding roller way and the coating section roller way at the moment is shown, when the PLC module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the formula S1= L is utilized j –v j *T j Calculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein，T j The time from the head end of the first glass substrate glass1 entering the wafer feeding roller way, v j The speed of the current sheet-feeding roller table, L j The length of the sheet feeding roller way.
Preferably, the outgoing control module is further configured to:
when the tail part of the third glass substrate glass3 passing through the coating section enters the inlet of the sheet outlet roller way, the photoelectric sensor X3 between the sheet outlet roller way and the coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the sheet outlet roller way and the coating section roller way at the same time, and the speed of the sheet outlet roller way is accelerated to V 3 In operation, when a falling edge signal of the sensor is received in the PLC module, if a new glass substrate entering the coating section roller way, namely a second glass substrate glass2, the formula T is utilized 2 ＝L d /v d -T d Calculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet 2 Wherein, T d The time from the head end of the second glass substrate glass2 entering the coating section roller way, v d The speed of the roller table at the front coating section, L d The length of the roller way of the coating section;
starting to accelerate the sheet discharging roller way, starting to time by the acceleration timing time Tc set in the PLC module, and when the time Tc is more than or equal to T 2 The speed of the piece discharging roller way is required to be consistent with that of the film coating section, so that the speed of the piece discharging roller way is reduced to V2 for operation.
The invention has the advantages that: according to the invention, the running speeds of the wafer feeding roller way, the coating section roller way and the wafer discharging roller way are controlled in real time during wafer feeding and wafer discharging, and on the premise of not changing the requirements of the coating section process, new components are not required to be added based on coating machine equipment in the original coating production line, and only by adding an intelligent roller way control strategy in a PLC module, the interval transmission time between glass substrates is shortened, and the working efficiency of the photovoltaic glass coating production line is greatly improved.
Drawings
FIG. 1 is a flow chart of a control method of a photovoltaic glass coating production line according to an embodiment of the present invention;
FIG. 2 is a schematic view of a production line of a control method of a photovoltaic glass coating production line according to an embodiment of the present invention;
FIG. 3 is a flowchart of an algorithm of a film feeding control in a control method of a photovoltaic glass film coating production line according to an embodiment of the present invention;
FIG. 4 is a flowchart of an algorithm of the film discharging control in the control method of the photovoltaic glass film coating production line according to the embodiment of the present invention;
fig. 5 is a schematic software block diagram of a PLC module in the control method of the photovoltaic glass coating line according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, a control method of a photovoltaic glass coating production line includes:
step S1: when the film plating machine is started, the film feeding roller way, the film plating section roller way and the film discharging roller way of the film plating machine are operated at a speed V2;
step S2: when the tail end of a second glass substrate glass2 passing through the wafer feeding roller way enters the inlet of the roller way of the coating section, if the distance S1 from the tail end of a first glass substrate glass1 on the wafer feeding roller way to the outlet of the wafer feeding roller way is greater than the preset distance Sabs, the wafer feeding roller way operates at the speed V1, otherwise, the speed V2 of the wafer feeding roller way is kept unchanged; when the head end of the glass1 of the first glass substrate on the film feeding roller way reaches the inlet of the roller way of the film coating section, the speed of the film feeding roller way is kept consistent with that of the belt of the film coating section, and the film feeding roller way and the belt of the film coating section run at the speed V1; the preset distance Sabs is the belt displacement distance corresponding to the motor acceleration and deceleration time period. The calculation process of the distance S1 specifically includes:
when the coating machine is started to run,when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the film coating section roller way, the PLC module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the film coating section roller way at the moment, the fact that the same glass substrate is not conveyed by the film feeding roller way and the film coating section roller way at the moment is shown, when the PLC module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the formula S1= L is utilized j –v j *T j Calculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T j The time from the head end of the first glass substrate glass1 entering the wafer feeding roller way, v j The speed of the current sheet-feeding roller table, L j The length of the sheet feeding roller way.
In order to facilitate understanding of the control method of the present invention, as shown in fig. 3, the control method of the present invention is an algorithm flowchart of the film feeding control in the control method of the photovoltaic glass film coating production line, and the algorithm execution steps are as follows:
s101: the three-section roller way motor is started to run, and the speed is set to be the speed V required by the coating process 2 Execution is performed to execute S102.
S102: and (5) judging whether the sensor X2 detects that the tail end of the glass substrate enters the roller way inlet of the coating section, and executing S103.
S103: calculating the distance S from the tail end of the glass substrate on the sheet feeding roller way to the outlet of the sheet feeding roller way 1 The calculation is completed to execute S104.
S104: judgment S 1 Whether or not greater than S abs (the motor acceleration and deceleration time period corresponds to the belt displacement distance), judging that the branch is executed, and if the judgment result is Y, executing S105; if the determination result is N, S107 is performed.
S105: the speed of the sheet feeding roller table is increased from V2 to V1 (V1 > V2), and S106 is executed.
S106: judgment sensor X 2 And (5) judging whether the glass substrate reaches the outlet of the sheet feeding roller way or not, and executing S107.
S107: and executing the operation of setting the sheet feeding roller way to run at the speed of V2.
And step S3: in the sheet discharging roller way, when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way, the time T2 required by the belt of the film coating section roller way to move S2 at the speed V1 is calculated, the speed of the sheet discharging roller way is increased to the speed V3 from the speed V2 to send out the third glass substrate glass3 coated with the film, the PLC module times the operation time of the sheet discharging roller way, and if the operation time Tc is more than or equal to T2, the speed of the sheet discharging roller way is kept consistent with that of the film coating section roller way. And the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the coating section roller way belt roller. The calculation process of the time T2 required by the movement S2 of the coating section roller belt at the speed V1 is as follows:
when the tail part of the third glass substrate glass3 passing through the coating section enters the inlet of the sheet outlet roller way, the photoelectric sensor X3 between the sheet outlet roller way and the coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the sheet outlet roller way and the coating section roller way at the same time, and the speed of the sheet outlet roller way is accelerated to V 3 In operation, when a falling edge signal of the sensor is received in the PLC module, if a new glass substrate entering the coating section roller way, namely a second glass substrate glass2, the formula T is utilized 2 ＝L d /v d -T d Calculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet 2 Wherein, T d The time from the head end of the second glass substrate glass2 entering the coating section roller way, v d The speed of the front coating section roller way, L d The length of the roller way of the coating section;
starting acceleration of the sheet discharging roller way, starting timing by the acceleration timing time Tc set in the PLC module, and when the time Tc is more than or equal to T 2 The speed of the sheet discharging roller way is required to be consistent with that of the film coating section, so that the speed of the sheet discharging roller way is reduced to V2 for operation.
In order to facilitate understanding of the control method of the present invention, as shown in fig. 4, the control method of the present invention is an algorithm flowchart of the film-out control in the control method of the photovoltaic glass film coating production line, and the algorithm execution steps are as follows:
s201: the three-section roller way motor is started to run at uniform speedSpeed V set as coating process requirement 2 Execution is performed to execute S202.
S202: and (5) judging whether the sensor X3 detects that the tail end of the coated section glass substrate enters the inlet of the film outlet roller way or not, and executing S203.
S203: and (3) judging whether the sensor X2 detects that the glass substrate enters the coating section inlet or not, executing the process according to the judgment completion direction, if so, executing S204, otherwise, executing S207.
S204: calculating the time T required by the head end of the glass substrate on the coating section to move to the outlet of the belt roller of the coating section 2 The calculation is completed to execute S205.
S205: velocity of sheet-discharging roller table is controlled from V 2 Quickly lifted to V 3 Starting the running timer (T) C ) Execution completes execution S206.
S206: determine T C And if the value is greater than or equal to T2, it is judged that the execution of S207 is completed.
S207: and executing to set the sheet outlet roller way to run at the speed of V2.
It should be noted that, in fig. 1, the sensor X2, the sensor X3, and the sensor X4 are reference points for calculating the distance between the glass substrates on the sheet feeding roller bed, the coating section roller bed, and the sheet discharging roller bed, respectively, the sensor X1 detects whether a sheet is fed into the sheet feeding roller bed, and the sensor X4 detects whether a sheet is discharged from the sheet discharging roller bed. In the roller way speed control method, if the length value of the roller way is large, errors may exist in the calculation of the distance between the glass substrates, and sensors are placed at the outlet and the inlet of the roller way to correct the distance deviation between the glass substrates. The first glass substrate glass1 is a film coating advancing sheet; the second glass substrate glass2 is a glass substrate in coating operation and enters the coating section roller way from the sheet feeding roller way; and the third glass substrate glass3 is subjected to film coating and then is discharged, and enters a sheet discharging roller way from the film coating section roller way.
The PLC module is mainly used for storing and executing a calculation formula and a control logic of the control method provided by the invention, two roller speed control software blocks, namely a sheet feeding roller speed control software block and an outlet speed control software block, are set in a PLC module program, and the software blocks comprise calculation of the distance between glass substrates, judgment of roller acceleration conditions, timing of acceleration operation time and acquisition of photoelectric signals. In the film feeding roller speed control software block, when the PLC module receives a falling edge signal of a sensor X2 in the equipment, the subsequent control strategy takes effect. In the sheet-out roller speed control software block, when the PLC module receives a falling edge signal of a sensor X3 in the equipment, the subsequent control strategy takes effect.
As shown in fig. 5, the intelligent control software block S301 for the speed of the sheet feeding roller way realizes that if the distance S exists, when the tail end of the second glass substrate glass2 passing through the sheet feeding roller way enters the inlet of the coating section roller way 1 Greater than S abs V on the sheet-feeding roller table 1 The speed is kept unchanged if the speed of the sheet feeding roller way is not changed. When the head end of the newly conveyed first glass substrate glass1 on the sheet feeding roller way reaches the inlet of the roller way of the film coating section, the speed of the sheet feeding roller way is kept consistent with that of the belt of the film coating section by V 1 Running at a speed;
the intelligent control software block S302 for the speed of the film discharging roller way is realized in the film discharging roller way, when the tail part of the glass substrate on the film plating section enters the inlet of the film discharging roller way, such as glass3 in figure 2, the time T required by the belt displacement S2 when the belt of the film plating section runs with V1 is calculated 2 At a speed V of the run-out table 2 Is lifted to V 3 Sending out the coated glass substrate, starting to time the running time Tc of the roller way in the software, and if the running time Tc is timed>T 2 And keeping the speed of the piece discharging roller way consistent with that of the film coating section roller way.
According to the technical scheme, the control method of the photovoltaic glass coating production line provided by the invention has the advantages that the running speeds of the film feeding roller way, the coating section roller way and the film discharging roller way are controlled in real time during film feeding and film discharging, and the intelligent control strategy of the roller ways is added into the PLC module based on the coating machine equipment in the original coating production line without adding new components under the condition of not changing the process requirement of the coating section, so that the interval transmission time between glass substrates is shortened, and the working efficiency of the photovoltaic glass coating production line is greatly improved.
Example 2
Corresponding to embodiment 1 of the present invention, embodiment 2 of the present invention further provides a control device for a photovoltaic glass coating production line, where the device includes:
the starting module is used for enabling a film feeding roller way, a film coating section roller way and a film discharging roller way of the film coating machine to operate at a speed V2 when the film coating machine is started;
the film feeding control module is used for enabling the film feeding roller way to operate at a speed V1 if the distance S1 from the tail end of the first glass substrate glass1 on the film feeding roller way to the outlet of the film feeding roller way is greater than a preset distance Sabs when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the roller way of the film coating section, otherwise, keeping the speed V2 of the film feeding roller way unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of a film coating section belt, and the film feeding roller way and the film coating section belt run at a speed V1;
and the film discharging control module is used for calculating the time T2 required by the movement S2 of the belt of the film coating section roller way at the speed V1 when the tail part of the third glass substrate glass3 passing through the film coating section enters the entrance of the film discharging roller way in the film discharging roller way, the speed of the film discharging roller way is increased to the speed V3 from the speed V2 to send out the third glass substrate glass3 which is coated with the film, the PLC module times the operation time of the film discharging roller way, and if the operation time Tc is more than or equal to T2, the speed of the film discharging roller way is kept consistent with the speed of the film coating section roller way.
Specifically, the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
Specifically, the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the coating section roller way belt roller.
Specifically, the film feeding control module is further configured to:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the PLC module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, the fact that the same glass substrate is not conveyed by the film feeding roller way and the coating section roller way at the moment is shown, when the PLC module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the coating machine is beneficial to the fact thatWith the formula S1= L j –v j *T j Calculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T j The time from the head end of the first glass substrate glass1 entering the wafer feeding roller way, v j The speed of the current sheet-feeding roller table, L j The length of the sheet feeding roller way is shown.
Specifically, the outgoing control module is further configured to:
when the tail part of the third glass substrate glass3 passing through the coating section enters the inlet of the sheet outlet roller way, the photoelectric sensor X3 between the sheet outlet roller way and the coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the sheet outlet roller way and the coating section roller way at the same time, and the speed of the sheet outlet roller way is accelerated to V 3 In operation, when a falling edge signal of the sensor is received in the PLC module, if a new glass substrate entering the coating section roller way, namely a second glass substrate glass2, the formula T is utilized 2 ＝L d /v d -T d Calculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet 2 Wherein, T d The time from the head end of the second glass substrate glass2 entering the coating section roller way, v d The speed of the front coating section roller way, L d The length of the roller way of the coating section;
starting to accelerate the sheet discharging roller way, starting to time by the acceleration timing time Tc set in the PLC module, and when the time Tc is more than or equal to T 2 The speed of the sheet discharging roller way is required to be consistent with that of the film coating section, so that the speed of the sheet discharging roller way is reduced to V2 for operation.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A control method of a photovoltaic glass coating production line is characterized by comprising the following steps:
the method comprises the following steps: when the film plating machine is started, the film feeding roller way, the film plating section roller way and the film discharging roller way of the film plating machine are operated at a speed V2;
step two: when the tail end of a second glass substrate glass2 passing through the wafer feeding roller way enters the inlet of the roller way of the coating section, if the distance S1 from the tail end of a first glass substrate glass1 on the wafer feeding roller way to the outlet of the wafer feeding roller way is greater than the preset distance Sabs, the wafer feeding roller way operates at the speed V1, otherwise, the speed V2 of the wafer feeding roller way is kept unchanged; when the head end of the glass1 of the first glass substrate on the film feeding roller way reaches the inlet of the roller way of the film coating section, the speed of the film feeding roller way is kept consistent with that of the belt of the film coating section, and the film feeding roller way and the belt of the film coating section run at a speed V1, wherein V1 is more than V2;
step three: in the film discharging roller way, when the tail part of a third glass substrate glass3 passing through the film coating section enters the entrance of the film discharging roller way, calculating the time T2 required by the belt of the film coating section roller way to move S2 at the speed V1, increasing the speed of the film discharging roller way from the speed V2 to the speed V3 to send out the third glass substrate glass3 coated with the film, timing the operation time of the film discharging roller way by the PLC module, and keeping the speed of the film discharging roller way consistent with the speed of the film coating section roller way if the operation timing time Tc is not less than T2, wherein the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the film coating section roller way and the exit of the film coating section roller way.
2. The method as claimed in claim 1, wherein the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
3. The method for controlling the photovoltaic glass coating production line according to claim 1, wherein the second step further comprises:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the wafer feeding roller way enters the roller way inlet of the coating section, the PLC module collects signals placed between the wafer feeding roller way and the coating sectionThe falling edge signal of the photoelectric sensor X2 in the middle of the coating section roller way shows that the piece feeding roller way and the coating section roller way do not convey the same glass substrate at the moment, the PLC module can enter the first glass substrate glass1 in the piece feeding roller way when receiving the falling edge signal, and the formula S1= L is utilized j –v j *T j Calculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T j The time from the head end of the first glass substrate glass1 entering the wafer feeding roller way, v j The speed of the current sheet-feeding roller table, L j The length of the sheet feeding roller way is shown.
4. The method for controlling the photovoltaic glass coating production line according to claim 1, wherein the third step further comprises:
when the tail part of the third glass substrate glass3 passing through the coating section enters the inlet of the sheet outlet roller way, the photoelectric sensor X3 between the sheet outlet roller way and the coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the sheet outlet roller way and the coating section roller way at the same time, and the speed of the sheet outlet roller way is accelerated to V 3 In operation, when a falling edge signal of the sensor is received in the PLC module, if a new glass substrate entering the coating section roller way, namely a second glass substrate glass2, the formula T is utilized 2 ＝L d /v d -T d Calculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet 2 Wherein, T d The time from the head end of the second glass substrate glass2 entering the coating section roller way, v d The speed of the roller table at the front coating section, L d The length of the roller way of the coating section;
starting to accelerate the sheet discharging roller way, starting to time by the acceleration timing time Tc set in the PLC module, and when the time Tc is more than or equal to T 2 The speed of the sheet discharging roller way is required to be consistent with that of the film coating section, so that the speed of the sheet discharging roller way is reduced to V2 for operation.
5. A control device for a photovoltaic glass coating production line is characterized by comprising:
the starting module is used for enabling a film feeding roller way, a film coating section roller way and a film discharging roller way of the film coating machine to operate at a speed V2 when the film coating machine is started;
the film feeding control module is used for enabling the film feeding roller way to operate at a speed V1 if the distance S1 from the tail end of the first glass substrate glass1 on the film feeding roller way to the outlet of the film feeding roller way is greater than a preset distance Sabs when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the roller way of the film coating section, otherwise, keeping the speed V2 of the film feeding roller way unchanged; when the head end of the glass1 of the first glass substrate on the film feeding roller way reaches the inlet of the roller way of the film coating section, the speed of the film feeding roller way is kept consistent with that of the belt of the film coating section, and the film feeding roller way and the belt of the film coating section run at a speed V1, wherein V1 is more than V2;
and the sheet discharging control module is used for calculating the time T2 required by the belt of the film coating section to move at the speed V1 for the belt to move S2 when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way in the sheet discharging roller way, the speed of the sheet discharging roller way is increased to the speed V3 from the speed V2, the coated third glass substrate glass3 is sent out, the PLC module times the operation time of the sheet discharging roller way, and if the operation time Tc is more than or equal to T2, the speed of the sheet discharging roller way is consistent with that of the film coating section roller way, wherein the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the film coating section roller way and the outlet of the film coating section roller way belt roller way.
6. The control device of claim 5, wherein the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
7. The control device of claim 5, wherein the film feeding control module is further configured to:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the PLC module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way, and the signal shows that the film feeding roller way and the coating section roller way enter at the momentThe same glass substrate is not conveyed by the sheet roller way and the film coating section roller way, when the PLC module receives a falling edge signal, the first glass substrate glass1 can enter the sheet roller way, and the formula S1= L j –v j *T j Calculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T j The time from the head end of the first glass substrate glass1 entering the wafer feeding roller way, v j The speed of the current feed roller table, L j The length of the sheet feeding roller way.
8. The control device of claim 5, wherein the film discharging control module is further configured to:
when the tail part of the third glass substrate glass3 passing through the coating section enters the inlet of the sheet outlet roller way, the photoelectric sensor X3 between the sheet outlet roller way and the coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the sheet outlet roller way and the coating section roller way at the same time, and the speed of the sheet outlet roller way is accelerated to V 3 In operation, when a falling edge signal of the sensor is received in the PLC module, if a new glass substrate entering the coating section roller way, namely a second glass substrate glass2, the formula T is utilized 2 ＝L d /v d -T d Calculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet 2 Wherein, T d The time from the head end of the second glass substrate glass2 entering the coating section roller way, v d The speed of the roller table at the front coating section, L d The length of the roller way of the coating section;
starting acceleration of the sheet discharging roller way, starting timing by the acceleration timing time Tc set in the PLC module, and when the time Tc is more than or equal to T 2 The speed of the sheet discharging roller way is required to be consistent with that of the film coating section, so that the speed of the sheet discharging roller way is reduced to V2 for operation.
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